爱上卡农的码农

NSString *path = [[NSBundle mainBundle] pathForResource:@"address.json" ofType:nil]; NSLog(@"path = %@",path); NSArray *array = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOf

NSDictionary * arr = @{ @"userName":@"408131213@qq.com", @"passWord":@"111111", @"longitudes":@"changsha",

//解决tableView无数据时还显示横线问题 UIView *v = [[UIView alloc] initWithFrame:CGRectZero]; [self.tableView setTableFooterView:v];//解决cell线条显示不全-(void)viewDidLayoutSubviews { if ([self.tableView respo

安装CocoaPods报错:[!] The dependency AFNetworking (~> 3.1.0) is not used in any concrete target. 今天新机装cocopods时，等安装完毕发觉出现[!] The dependency AFNetworking (~> 3.1.0) is not used in any concrete target.这个警告。

//UIImage图片转成Base64字符串：UIImage *originImage = [UIImage imageNamed:@"originImage.png"];NSData *data = UIImageJPEGRepresentation(originImage, 1.0f);NSString *encodedImageStr = [data base64EncodedStrin

#import "ViewController.h"#import <AVFoundation/AVFoundation.h>@interface ViewController ()@property (weak, nonatomic) IBOutlet UISegmentedControl *segmentControl;//播放对象@property (nonatomic, strong

#import "ViewController.h"#import <AVFoundation/AVFoundation.h>@interface ViewController ()//记录systemSoundID@property (nonatomic, assign) SystemSoundID systemID;//记录播放器对象@property (nonatomic, stro

#import "ViewController.h"#import <MapKit/MapKit.h>@interface ViewController ()<MKMapViewDelegate>@property (weak, nonatomic) IBOutlet MKMapView *mapView;@property (nonatomic, strong) CLGeocoder *ge

#import "ViewController.h"#import <MapKit/MapKit.h>#import "TRAnnotation.h"@interface ViewController ()<MKMapViewDelegate>@property (weak, nonatomic) IBOutlet MKMapView *mapView;@property (nonatomi

#import "ViewController.h"#import <MapKit/MapKit.h>@interface ViewController ()<MKMapViewDelegate>@property (weak, nonatomic) IBOutlet MKMapView *mapView;@property (nonatomic, strong) CLLocationMana

#import "ViewController.h"#import <CoreLocation/CoreLocation.h>@interface ViewController ()<CLLocationManagerDelegate>//必须把CLLocationManger声明属性@property (nonatomic, strong) CLLocationManager *mgr;@en

- (IBAction)convertJSON2Foundation:(id)sender { //需求：从网络中请求天气的JSON数据, 解析指定的值，显示到textView上 //0.天气对应url NSURL *weatherURL = [NSURL URLWithString:@"http://www.raywenderlich.com/demos/weather_s

- (void)viewDidLoad { [super viewDidLoad]; //1.获取文件的路径 NSString *jsonFilePath = [[NSBundle mainBundle] pathForResource:@"test.json" ofType:nil]; //2.读取文件内的数据(NSData类型：一般服务器返回的数据类型是NSData

#import "ViewController.h"#import "AFNetworking.h"@interface ViewController ()@end@implementation ViewController- (IBAction)sendHTTPGetRequest:(id)sender { //0.准备url的字符串 NSString *urlStr = @"h

#import "ViewController.h"@interface ViewController ()<NSURLSessionDownloadDelegate>//显示进度label@property (weak, nonatomic) IBOutlet UILabel *progressPercentLabel;//进度视图@property (weak, nonatomic) I

#import "ViewController.h"@interface ViewController ()<NSURLSessionDataDelegate>@property (weak, nonatomic) IBOutlet UIImageView *imageView;@property (weak, nonatomic) IBOutlet UIProgressView *progre

1.注册通知[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showProgressHud:) name:@"showProgressHud" object:nil];2.发送通知[[NSNotificationCenter defaultCenter] postNotificationName:@"

-(void)startTime{ __block int timeout=59; //倒计时时间 dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); dispatch_source_t _timer = dispatch_source_create(D

- (void)imageWihtSize:(CGSize)size radius:(CGFloat)radius backColor:(UIColor *)backColor completion:(void(^)(UIImage *image))completion{ // 异步绘制裁切 dispatch_async(dispatch_get_global_queue(0, 0)

#pragma mark - 检查更新- (void)checkVersion{ if ([AppID length] < 1) { return; } NSString *url = [NSString stringWithFormat:@"http://itunes.apple.com/lookup?id=%@",AppID]; NSMutabl

NSString *jScript = @"var meta = document.createElement('meta'); meta.setAttribute('name', 'viewport'); meta.setAttribute('content', 'width=device-width'); document.getElementsByTagName('head')[0].appe

实测，必需要延迟一会儿才能获取正确高度。 -(void)webViewDidFinishLoad:(UIWebView *)webView { dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ CGFloat

//// ViewController.m// pdfViewer//// Created by Johnay on 17/9/28.// Copyright © 2017年 Johnay. All rights reserved.//#import "ViewController.h"@interface ViewController ()<UIDocumentInterac

//// ViewController.m// readFile//// Created by Johnay on 17/8/22.// Copyright © 2017年 Johnay. All rights reserved.//#import "ViewController.h"@interface ViewController ()<UIScrollViewDelega

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { if ([textField == yourTextField) { if (![self validateNumber:str

直接在代理方法中写代码- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { if (textField == yourTextField) { NSString * toBeStri

#import "ViewController.h"#import "AFNetworking.h"@interface ViewController (){ UITextField *textF;}@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; textF =

- (void)viewDidLoad{ [super viewDidLoad]; // 1. 创建 btn 并添加点击事件 UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; [btn setFrame:CGRectMake(100, 100, 100, 60)]; btn.backgro

终端执行三条命令完美解决尊重原创者劳动成果哈cd ~ mv .itmstransporter/ .old_itmstransporter/ “/Applications/Xcode.app/Contents/Applications/Application Loader.app/Contents/itms/bin/iTMSTransporter” 注意:一定要等第三条命令执行完毕才可以

给大家介绍一个内存检测神器,只需要用cocoaPods安装，无需导入任何头文件即可自动检测内存泄漏。GitHub地址 https://github.com/Zepo/MLeaksFindercocoaPods安装代码：pod ‘MLeaksFinder’安装后效果如下：最后如果想关闭自动检测功能，只需要将MLeaksFinder.h文件中第11行注释去掉即可！

UIImageView *imgV = [[UIImageView alloc] initWithFrame:CGRectMake(100,200,100,100];imgV.image = [[UIImage imageNamed:@"多边形-1"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];imgV.tintColo

这里面有很多自定义的宏,效果图在下面,如果想要这个效果的朋友,不妨花几分钟把里面的宏改下等不报错了,直接用这下面的代码调用就可以了! 调用代码 SelectTimeV *selectTimeV = [[SelectTimeV alloc] init]; selectTimeV.block = ^(NSString *timeStr) { if (timeStr)

- (void)setup{ self.titleLabel.textAlignment = NSTextAlignmentCenter;}- (instancetype)initWithFrame:(CGRect)frame{ if (self = [super initWithFrame:frame]) { [self setup]; } r

#import "TRTableViewController.h"#import "TRDataManager.h"#import "TRAlbum.h"#import "TRTableViewCell.h"@interface TRTableViewController ()@property (nonatomic, strong) NSArray *albumsArray;//存储下载好

#import "ViewController.h"#import <WebKit/WebKit.h>@interface ViewController ()<WKNavigationDelegate>@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; //1.创建NSURL

- (void)viewDidLoad { [super viewDidLoad]; //需求：NSArray数据存到XXX/Documents/test.txt //1.NSArray NSArray *array = @[@"Jonny", @19, @[@"Objective-C", @"Swift", @"Ruby"]]; //2.Documents路

//1.获取沙盒数据容器根目录 NSString *homePath = NSHomeDirectory(); NSLog(@"home根目录:%@", homePath); //2.获取Documents路径 /*参数一：指定要搜索的文件夹枚举值 参数二：指定搜索的域Domian: NSUserDomainMask 参数三：是否需要绝对/全路

import <Foundation/Foundation.h>//存放文件绝对路径NSString *filePath = @"/Users/ios/Desktop/dome-3";// 计算文件的代码行数/* path : 文件的全路径(可能是文件夹、也可能是文件) 返回值 int ：代码行数 */NSUInteger codeLineCount(NSString *path){

- 写[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@”isFirstLaunch”]; [[NSUserDefaults standardUserDefaults] synchronize];- 读BOOL launchScreen = [[NSUserDefaults standardUserDefaults

UIButton *addButton = [UIButton buttonWithType:UIButtonTypeCustom]; addButton.frame = CGRectMake(10, 0, 60, 40); [addButton setImage:[UIImage imageNamed:@"iconfont-xinzengyemian"] forState:UICo